Video Experimental Relacionado

Updated: Jan 25, 2026

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

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Published on: March 11, 2021

Evaluación de la dosis crítica de órganos durante la obtención de imágenes intervencionistas de accidentes

E Özgür¹, D Tunçman Kayaokay², D S Özgür³

¹Istanbul Training and Research Hospital, Radiology Department, Istanbul, Türkiye.

Radiography (London, England : 1995)

|January 23, 2026

Abstracto

Introduction:

Neurointerventional stroke imaging involves prolonged fluoroscopy and multiple angiographic acquisitions, potentially delivering meaningful radiation doses to radiosensitive head and neck organs. This study quantified organ-specific absorbed doses under clinically realistic conditions.

Methods:

Organ doses were measured using calibrated MTS-100 LiF:Mg,Ti thermoluminescent dosimeters (TLD-100) placed in an Alderson Rando anthropomorphic phantom. Simulated stroke imaging was performed on a Siemens Artis Zee C-arm system using routine clinical parameters. TLDs were calibrated under RQR-9 beam quality at an accredited SSDL and read with a Harshaw 4500 reader.

Results:

The highest absorbed doses occurred in the left parotid gland and C1-C2 vertebral level. Bilateral thyroid doses averaged ∼4.6 mGy, and eye lens doses ranged from 5.6 to 11.5 mGy. Dose distribution showed marked spatial variability, reflecting projection geometry and scatter contributions.

Conclusion:

Although measured single-session doses were below deterministic thresholds, cumulative exposure during repeated or prolonged interventions may become clinically significant.

Implications For Practice:

The findings support the need for strict collimation, optimized projection angles, pulsed fluoroscopy, and continuous dose monitoring to minimize patient and staff exposure while maintaining diagnostic image quality.

Palabras clave:

ALARA Dosimetría clínica Seguridad radiológica Imágenes de accidentes cerebrovasculares

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